This is why some of us are Paranoid Schizophrenics, skeptics, don't trust posters and ask a lot of questions without helping. This was an innocent post about vacuum advance and HEI. After two pages we squeezed out the whole story. We could have gone on and on about all the reasons for no start. Which is usually 16 pages. We could have just answered the simple question. I wish that folks would spell out the situation in the beginning.
So............the reason for giving up is that we don't know if you can get the distributor back in correctly. We don't know if you are going to buy a clone or Pertronix or points. We don't know why someone would take a fuel pump off to clean it. We don't know if the carburetor is apart. We don't know if you have a ballast resistor. We don't know if you have an electric solenoid on the starter. We don't know why you took it all apart without any knowledge and before asking here. We don't know what you might do next. We don't know if you plan on ever getting it back together so we can wire it and troubleshoot it after we see what it does then. We don't know if the gaskets for all the removed parts exist. We don't know what to say about what.
Don't push it off on pops. YOU started the 12V conversion, you took carb, dizzy, coil, pump and etc. off yourself. You say no wiring exists but it fired, so had some wiring that you must have removed. We have no idea if was wired right because you took off the wiring. Could have been a simple fix.
What do you want us to do for you? What do you need help with?
You say it turns over, that is called cranking, the starter is cranking/turning/rotating the motor. You say does everything but start. Does it fire? Does noise come out of the exhaust? actually begins to start sort of running on it's own? When you put the parts back together, let us know. Don't try to start. We will then go over the wiring AFTER the parts are in place correctly and the questions above are answered. We are being rough on you right now. We will ease up later.